GB18047-2017

compressed natural gas as vehicle fuel

车用压缩天然气

GB 18047-2017 ist eine gültige verbindliche chinesische Nationalnorm: compressed natural gas as vehicle fuel. Branchencluster: Automobil. Schwerpunkt: Energieeffizienz. Inkrafttreten: 1. Apr. 2018.

Die Anwendbarkeit hängt vom Produktumfang, dem Zertifizierungsweg, Bekanntmachungen der Behörden und Übergangsregeln ab. Fordern Sie eine Übersetzung an oder prüfen Sie die Quelle, bevor Sie diesen Eintrag für Compliance-Entscheidungen nutzen.

Compliance-Überblick

Dieser Überblick ist derzeit nur auf Englisch verfügbar.

Geltungsbereich und Anwendbarkeit

This standard applies to compressed natural gas (CNG) used specifically as a vehicle fuel, operating at pressures not exceeding 25 MPa. It is applicable to gas composition used in automotive applications and does not cover liquefied natural gas (LNG) or industrial gas specifications. Manufacturers and suppliers of CNG for the Chinese automotive market must comply with this standard.

Technische Anforderungen

This standard outlines the technical specifications for vehicle fuel CNG, focusing on critical parameters such as high heating value, total sulfur, hydrogen sulfide, carbon dioxide, and oxygen content. Clause 4.1 detailing these technical indicators is mandatory. A significant update in this version is the stricter limit on total sulfur, which has been reduced from previous allowances to a maximum of 100 mg/m³. The standard also specifies stringent water content and water dew point requirements to prevent liquid formation and corrosion, aligning with ISO 15403-2:2006 recommendations. Additionally, the standard mandates that CNG must not contain liquid hydrocarbons under operating conditions and must have solid particle diameters smaller than 5 μm. It also requires the gas to have a noticeable odor, necessitating odorization if natural odor is insufficient. Supplementary requirements address the anti-knock performance, calculated via the Methane Number (MN), and the Wobbe index, categorizing the gas into 10T and 12T classifications to ensure engine compatibility.

Prüfverfahren

The standard references various GB/T methods for determining gas composition and impurities. Key testing includes gas chromatography for heating value and component analysis (referencing GB/T 13610 and GB/T 27894 series), and chemical or physical methods for total sulfur and hydrogen sulfide content (referencing GB/T 11060 series). For water content and dew point, testing methods include the cooling mirror condensation hygrometer method (GB/T 17283) and Karl Fischer coulometric method (GB/T 18619.1). Specific arbitration methods are designated for each parameter to resolve compliance disputes.

Häufige Fragen

What products are regulated under GB 18047-2017?

This standard regulates compressed natural gas (CNG) used specifically as a vehicle fuel, operating at pressures not exceeding 25 MPa.

Are there any updates from the previous version of GB 18047?

The 2017 version imposes stricter limits, notably reducing the maximum total sulfur content from 200 mg/m³ to 100 mg/m³. It also modified the water content requirement to a mass concentration limit of 30 mg/m³ and updated gas categories in Appendix B.

How does GB 18047-2017 differ from ISO standards?

The standard aligns its water content metric with ISO 15403-2:2006 recommendations. It also references international methodologies like the ASTM motor octane number rating for calculating the Methane Number (MN) in Appendix A.

The summary above provides a high-level overview of GB 18047-2017. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 18047-2017 today to access all detailed parameters, tables, and testing procedures.

Hinweise zur Anwendbarkeit

Normtyp: Produkt
CCS: E24
ICS: 75.060
Zuständige Behörde: National Energy Administration
Technisches Komitee: National Energy Administration

Normbeziehungen

Ersetzt:GB 18047-2000